CN110999518B - Terminal, base station and control method thereof in wireless communication system - Google Patents
Terminal, base station and control method thereof in wireless communication system Download PDFInfo
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- CN110999518B CN110999518B CN201880053400.5A CN201880053400A CN110999518B CN 110999518 B CN110999518 B CN 110999518B CN 201880053400 A CN201880053400 A CN 201880053400A CN 110999518 B CN110999518 B CN 110999518B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
- H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The present disclosure relates to a quasi-fifth generation (pre-5G) or 5G communication system to be provided for supporting higher data rates than fourth generation (4G) communication systems, such as Long Term Evolution (LTE). The control method of the terminal according to an embodiment of the present invention may include the steps of: receiving information about a second base station from a first base station; transmitting a signal for connection with the second base station based on the information; and transmitting or receiving a signal using a communication system of the second base station when the connection with the second base station is successful.
Description
Technical Field
The present disclosure relates to a wireless communication system, and more particularly, to a method and apparatus for easily establishing a connection with a 5G communication system and efficiently using services associated with the 5G communication system.
Background
In order to meet the increasing demand for wireless data services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, the 5G or pre-5G communication system is also referred to as a "super 4G network" or a "LTE-after-system".
A 5G communication system is considered to be implemented in a higher frequency (mmWave) band (e.g., 60GHz band) to achieve a higher data rate. In order to reduce propagation loss of radio waves and increase transmission distance, beamforming, massive Multiple Input Multiple Output (MIMO), full-size MIMO (FD-MIMO), array antennas, analog beamforming, massive antenna techniques are discussed in 5G communication systems.
Further, in the 5G communication system, development of system network improvement is being performed based on advanced small cells, cloud Radio Access Networks (RANs), ultra dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, cooperative multipoint (CoMP), reception-side interference cancellation, and the like.
In 5G systems, hybrid FSK and QAM modulation (FQAM) and Sliding Window Superposition Coding (SWSC) have been developed as Advanced Coding Modulation (ACM), and Filter Bank Multicarrier (FBMC), non-orthogonal multiple access (NOMA) and Sparse Code Multiple Access (SCMA) as advanced access technologies.
It is desirable to have a method that enables a user equipment to easily use a 4G communication system and a 5G communication system and enables the user equipment to perform a service suitable for each of the 4G communication system and the 5G communication system in an area where a normal 4G communication system and 5G communication system coexist.
Disclosure of Invention
Technical problem
Accordingly, the present disclosure has been made in view of the above-mentioned problems, and an aspect of the present disclosure enables a user equipment currently using a normal 4G communication system to easily use a 5G communication system.
Solves the problems of
According to an aspect of the present disclosure, a control method of a user equipment in a wireless communication system includes: receiving information about a second base station from a first base station; transmitting a signal for connection with the second base station based on the information; and if the connection with the second base station is successfully established, transmitting or receiving a signal using the communication system of the second base station.
According to another aspect of the present disclosure, a control method of a first base station in a wireless communication system includes: and transmitting information about the second base station to the user equipment, wherein when the user equipment transmits a signal for connection with the second base station to the second base station based on the information and the user equipment and the second base station are successfully connected, the user equipment transmits or receives the signal using a communication system of the second base station.
According to an aspect of the present disclosure, a user equipment in a wireless communication system includes: a transceiver configured to transmit or receive signals; and a controller configured to perform control to: receiving information about a second base station from a first base station; transmitting a signal for connection with the second base station based on the information; and performing transmission or reception of a signal using a communication system of the second base station when the connection with the second base station is successfully established.
According to another aspect of the present disclosure, a first base station in a wireless communication system includes: a transceiver configured to transmit or receive signals; and a controller configured to control the transceiver to transmit information about the second base station to the user equipment, and wherein the user equipment transmits or receives signals using a communication system of the second base station when the user equipment transmits signals for connection with the second base station to the second base station based on the information and the user equipment and the second base station are successfully connected.
Advantageous effects of the invention
According to the present disclosure, a user equipment connected to a normal 4G communication system can be easily connected to a 5G communication system, and a user can use a service suitable for the 5G communication system via the user equipment.
Drawings
Fig. 1a and 1b are diagrams illustrating user equipment moving from a coverage area of a 4G base station to a coverage area of a 5G base station according to various embodiments of the present disclosure;
fig. 2a to 2d are diagrams illustrating services that may be provided by a user equipment connected to a 5G communication system according to various embodiments of the present disclosure;
fig. 3 is a diagram illustrating throughput over time when a user equipment is connected to a 5G base station according to an embodiment of the present disclosure;
fig. 4 is a block diagram illustrating components of a base station according to an embodiment of the present disclosure; and
fig. 5 and 6 are block diagrams illustrating components of user equipment according to embodiments of the present disclosure.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
In the description of the embodiments of the present disclosure, descriptions of techniques that are already known to those skilled in the art and are not directly related to the present disclosure are omitted. Such unnecessary description is omitted to prevent obscuring the main idea of the present disclosure and to more clearly convey the main idea.
For the same reasons, some elements may be enlarged, omitted, or schematically shown in the drawings. Furthermore, the size of each element does not fully reflect the actual size. In the drawings, identical or corresponding elements have identical reference numerals.
Advantages and features of the present disclosure and the manner in which they are achieved will become apparent by reference to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments set forth below, but may be implemented in various forms. The following examples are provided solely to fully disclose the present disclosure and to inform those ordinarily skilled in the art of the scope of the present disclosure, and the present disclosure is limited only by the scope of the appended claims. Throughout the specification, the same or similar reference numerals denote the same or similar elements.
Here, it will be understood that each block of the flowchart illustrations, and combinations of blocks in the flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks. These computer program instructions may also be stored in a computer-usable or computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-usable or computer-readable memory produce an article of manufacture including instruction means that implement the function specified in the flowchart block or blocks. The computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks.
Additionally, each block of the flowchart illustrations may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
As used herein, "unit" refers to a software element or a hardware element, such as a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC), that performs a predetermined function. However, the "unit" does not always have a meaning limited to software or hardware. The "unit" may be structured to be stored in an addressable storage medium or to execute one or more processors. Thus, a "unit" includes, for example, software elements, object-oriented software elements, class elements or task elements, procedures, functions, properties, programs, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and parameters. The elements and functions provided by a "unit" may be combined into a smaller number of elements "units", or divided into a larger number of elements "units". Furthermore, elements and "units" may be implemented to render one or more CPUs within a device or secure multimedia card.
In general, a user equipment in the present disclosure may include a mobile terminal, and may be a device that has subscribed to and received services from a mobile communication system. The mobile terminal may include a smart device such as a smart phone, a tablet PC, etc., but this is merely an example, and the present disclosure is not limited thereto.
Hereinafter, only terms for identifying an access node, terms for indicating a network entity, terms for indicating a message, terms for indicating an interface between network entities, terms for indicating various types of identification information, etc. are used for convenience of description only. Accordingly, the present disclosure is not limited by the terms provided below, and other terms indicating subjects having equivalent technical meanings may be used.
For ease of description, the present disclosure uses terms and names defined in the third generation partnership project long term evolution (3 GPP LTE) standard. However, the present disclosure is not limited by terms and names, and may be equally applied to a system conforming to another standard.
The structure of a next-generation mobile communication system to which the present disclosure is applicable will be briefly described. A radio access network of a next generation mobile communication system (hereinafter referred to as a new air interface (NR) or 5G) may include a next generation base station (new air interface node B, hereinafter referred to as an NR gNB or NR base station) and a new air interface core network (NR CN). A user equipment (new air interface user equipment, hereinafter referred to as NR UE or user equipment) may access the external network via the NR gNB and the NR CN.
The NR gNB corresponds to an evolved NodeB (eNB) of a legacy LTE system. The NR gNB is connected to the NR UE via a radio channel and may provide better service than the service from the legacy node B. In the next generation mobile communication system, all user traffic is served through a shared channel. Accordingly, it is desirable to perform scheduling by collecting state information such as buffer state, available transmit power state, channel condition, etc. in association with a UE. The NR NB is responsible for the same operation. A single NR gNB typically controls multiple cells. In order to achieve ultra-high speed data transmission compared to conventional LTE, a bandwidth greater than or equal to the current maximum bandwidth may be used, and Orthogonal Frequency Division Multiplexing (OFDM) is used as a radio access technology, and a beamforming technology is additionally used. Further, a modulation scheme for determining a channel coding rate and an adaptive modulation and coding (hereinafter, referred to as AMC) scheme are applied corresponding to channel conditions of the UE. The NR CN performs functions of supporting mobility, configuring bearers, configuring QoS, etc. The NR CN is a device responsible for various control functions in addition to mobility management functions associated with the UE, and may be connected to a plurality of base stations. In addition, the next generation mobile communication system can interoperate with the legacy LTE system, and the NR CN is connected to the MME via a network interface. The MME is connected to an eNB, which is a legacy base station.
Hereinafter, as described above, the base station described in connection with the embodiments of the present disclosure may be a 5G base station that transmits signals using beams formed by beamforming in an ultra high frequency (mmWave) band.
Fig. 1a and 1b are diagrams illustrating a User Equipment (UE) moving from a coverage area of a 4G base station to a coverage area of a 5G base station according to various embodiments of the present disclosure.
As shown in fig. 1a, if UE120 is present in coverage 105 of 4G base station 100, UE120 connects to 4G base station 100 and may use a 4G communication system.
The 4G base station 100 and the 5G base station 110 may coexist. Accordingly, UE120 is connected to one of 4G base station 100 and 5G base station 110, and may use a 4G communication system provided by 4G base station 100 or may use a 5G communication system provided by 5G base station 110.
Fig. 1a shows an embodiment in which UE120 moves from 4G base station 100 to 5G base station 110. Thus, if UE120 arrives at coverage area 115 of 5G base station 110, UE120 may connect to 5G base station 110. For example, UE120 may perform a handover from 4G base station 100 to 5G base station 110.
Furthermore, as shown in fig. 1a, in general, the coverage area 115 of the 5G base station 110 may be narrower than the coverage area 105 of the 4G base station 100. Thus, even if UE120 connected to 4G base station 100 is not present in coverage area 115 of 5G base station 110 or is not present within a threshold distance from coverage area 115, UE120 may receive information associated with 5G base station 110 from 4G base station 100.
For example, the 4G base station 100 may be connected to the 5G base station 110 through an X2 interface. Accordingly, the 4G base station 100 may have information associated with the 5G base station 110 and may transmit the information associated with the 5G base station 110 to the terminal 120. In particular, 4G base station 100 may notify UEs 120 present in coverage area 105: within a threshold distance there is a 5G base station 110.
The 4G base station 100 may transmit a Public Land Mobile Network (PLMN) identifier of the 5G base station 110 to the UE120 as information associated with the 5G base station 110.
UE120 receiving information associated with the 5G base station may attempt to connect to 5G base station 110. For example, UE120 may include both a 4G chip and a 5G chip. UE120 may only turn on the 4G chip and deactivate the 5G chip until information associated with the 5G base station is received. Thus, UE120 may turn on the 5G chip when receiving information associated with 5G base station 110 from 4G base station 100. UE120 may attempt to connect to 5G base station 110. However, if connection with the 5G base station 110 is not allowed due to congestion in the 5G communication system provided by the 5G base station 110, the UE120 maintains connection with the 4G base station 100. Thus, UE120 may again deactivate the 5G chip and may continue to use the 4G communication system provided by 4G base station 100.
Fig. 1b is a diagram illustrating a UE moving from a coverage area of a 4G base station to a coverage area of a 5G base station according to another embodiment of the present disclosure.
Fig. 1b is a diagram illustrating an embodiment in which UE120 is present in coverage area 135 of another 4G base station 130 prior to entering coverage area 105 of 4G base station 100.
As shown, there is no 5G base station within a threshold distance of another 4G base station 130. Thus, UE120 may not receive information associated with the 5G base station. For example, another 4G base station 130 may broadcast only the 4G PLMN ID.
UE120 may perform a handover from another 4G base station 130 to 4G base station 100 by moving from coverage area 135 of another 4G base station 130 to coverage area 105 of 4G base station 100. As described above, UE120 may receive information associated with 5G base station 110 from 4G base station 100 in addition to information associated with 4G base station. For example, UE120 may receive both the PLMN ID of the 4G base station and the PLMN ID of the 5G base station from 4G base station 100.
According to the above method, if the UE120 attempts to connect to the 5G base station 110, unnecessary signaling overhead may not be caused, which is advantageous.
UE120 receiving information associated with 5G base station 110 from 4G base station 100 may perform services corresponding to a 5G communication system. For example, UE120 may run an application running in a 5G communication system. Alternatively, UE120 may change the execution level of the application to a level corresponding to the 5G communication system.
For example, through application profile (profiling), UE120 activates configured services or applications only when a 5G communication system is used.
In particular, if UE120 is connected to 5G base station 120, UE120 is able to download large-capacity files that are greater than or equal to a threshold size (e.g., 1 GB). For example, even if the user does not separately input a download command, the UE120 can download a large-capacity file upon successful connection to the 5G base station 120.
Alternatively, UE120 may update the background application. For example, although the user does not separately input the download command, the UE120 can update the background application upon successful connection to the 5G base station 120.
UE120 may use 5G bandwidth to provide differentiated services such as panorama view switching, automatic resolution adjustment, or ultra-large volume file download.
In particular, fig. 2a to 2d are diagrams illustrating services that may be provided by a UE connected to a 5G communication system according to various embodiments of the present disclosure.
Fig. 2a is a diagram illustrating an embodiment in which a streaming service is changed according to an embodiment of the present disclosure. For example, a UE connected to a 4G base station and using a 4G communication system may receive a streaming service of the 2D image 200. In this case, if the UE connects to the 5G base station according to the above-described method, the UE may change the currently received streaming service to the wide-angle 3D image 205.
In particular, consider an example of a streaming service that simultaneously provides 2D images and a streaming service that provides 3D images. The UE may receive the streaming service of the 2D image 200 while the UE receives the 4G wireless communication service from the 4G base station. The UE may turn on the 5G chip if the UE receives a PLMN ID of the 5G base station from the 4G base station and detects the presence of the 5G base station within a predetermined distance. Subsequently, the UE may attempt to connect to the 5G base station. In this case, if the UE currently performs streaming service, the UE may perform preparation to change the streaming service from a 2D image to a wide-angle 3D image upon successful establishment of a connection with the 5G base station. When the UE successfully connects to the 5G base station, the UE downloads the wide-angle 3D image and reproduces the streaming service.
Meanwhile, if the UE fails to connect to the 5G base station, the UE continues to download the 2D image from the 4G base station, and may reproduce a streaming service of the 2D image.
Fig. 2b is a diagram illustrating an embodiment in which a panorama function is changed according to another embodiment of the present disclosure. For example, a UE 230 connected to a 4G base station and using a 4G communication system may receive a normal image 240. In this case, if the UE 230 connects to the 5G base station according to the above-described method, the UE 230 may change the currently received image to the panoramic image 245.
For example, the camera 210 including the 360 degree rotation function may capture a panoramic image and transmit it to the base station 220. In this case, the base station 220 may include a 4G base station and a 5G base station.
If the base station 220 is a 4G base station, the base station 220 may not transmit the panoramic image to the connected UE 230, but may transmit the normal image 240 based on at least a portion of the panoramic image.
As described above, if the UE 230 receives the PLMN ID of the 5G base station from the 4G base station and detects that the 5G base station exists within a predetermined distance, the UE 230 may turn on the 5G chip. Subsequently, UE 230 may attempt to connect to the 5G base station. In this case, if the image reproduction application is running, the UE may perform preparation to change the reproduced image from a normal image to a panoramic image upon successful establishment of a connection with the 5G base station. If the UE successfully connects to the 5G base station, the UE may download the panoramic image from the 5G base station. The UE may render the panoramic image via running an image rendering application.
Meanwhile, if the UE fails to connect to the 5G base station, the UE continues to download the normal image from the 4G base station and may continue to reproduce the normal image.
Fig. 2c is a diagram illustrating an embodiment in which the quality of an image reproduced by a UE is changed according to another embodiment of the present disclosure. For example, a UE 230 connected to a 4G base station and using a 4G communication system may receive a 4G full High Definition (HD) image 260. In this case, if the UE 230 connects to the 5G base station according to the above-described method, the UE 230 may change the image being received to the 5G ultra high definition image 265.
For example, an imaging device 250, such as an unmanned aerial vehicle, may take an image and transmit it to the base station 220. In this case, the base station 220 may be a 4G base station or a 5G base station.
If the base station 220 is a 4G base station, the base station 220 may transmit a 4G full high definition image 260 to the connected UE 230.
As described above, if the UE 230 receives the PLMN ID of the 5G base station from the 4G base station and detects that the 5G base station exists within a predetermined distance, the UE 230 may turn on the 5G chip. Subsequently, UE 230 may attempt to connect to the 5G base station. In this case, if the image reproduction application is running, the UE may change the application reproduction level so as to change the image being reproduced from the 4G full high definition image 260 to the 5G ultra high definition image 265 upon successful establishment of the connection with the 5G base station. If the UE successfully connects to the 5G base station, the UE may download the 5G ultra-high definition image 265 from the 5G base station. Subsequently, the UE may render the 5G ultra-high definition image 265 via the running image rendering application.
Meanwhile, if the UE is not connected to the 5G base station, the UE continues to download the 4G full high definition image 260 from the 4G base station, and may continue to reproduce the 4D full high definition image 260.
Fig. 2d is a diagram illustrating an embodiment in which a view mode provided by a UE is changed according to another embodiment of the present disclosure. In the embodiment of fig. 2d, the UE may be a mobile device such as a vehicle.
For example, if the vehicle is in an autonomous mode in which the vehicle is connected to a 4G base station and uses a 4G communication system, the vehicle may receive information from the 4G base station using the base view mode 270. In this case, if the vehicle is connected to the 5G base station according to the above-described method, the vehicle is changed from the current view mode to the extended view mode 275.
In particular, the base station may transmit information associated with the autonomous driving of the vehicle to the vehicle. In this case, if the base station is a 4G base station, the base station may transmit information associated with autopilot so that the vehicle can display the basic view mode 270.
As described above, if the vehicle receives the PLMN ID of the 5G base station from the 4G base station and detects the presence of the 5G base station within a predetermined distance, the UE 230 may turn on the 5G chip. Subsequently, the vehicle may attempt to connect to the 5G base station. In this case, if an application for displaying information associated with automatic driving is running in the vehicle, the vehicle may change an execution level of the application so as to change the basic view mode 270 of the application to the extended view mode 275 upon successful establishment of a connection with the 5G base station. If the vehicle successfully connects to the 5G base station, the vehicle may download information associated with the extended view mode 275. The vehicle may display the extended view mode 275.
Meanwhile, if the vehicle is not connected to the 5G base station, the vehicle may continue to download the basic view pattern 270 from the 4G base station and may continue to display the basic view pattern 270.
The case where the vehicle downloads information associated with the basic view mode and the extended view mode when the vehicle is in the automatic driving mode is only an example, and the vehicle may download various types of information such as driving information or navigation information from the base station even when the vehicle is not in the automatic driving mode. The quality of the information downloaded by the vehicle may vary depending on whether the base station to which the vehicle is successfully connected is a 4G base station or a 5G base station. In addition, the vehicle may control the execution level of the application so as to display information having different qualities according to whether the base station to which the vehicle is successfully connected is a 4G base station or a 5G base station.
Meanwhile, a scheme of selecting a wireless communication service may be determined using a cost function. Specifically, according to an embodiment of the present disclosure, formula 1 is a formula comparing 4G wireless communication usage fees and 5G wireless communication usage fees.
[ 1]
In formula 1, C 4G Representing 4G royalties, S 4G Indicating 4G use time, P 4G Represents 4G power consumption and α and β are constants.
In addition, C 5G Representing 5G royalties, S 5G Indicating 5G use time, P 5G Represents 5G power consumption and α and β are constants.
The left side of equation 1 represents the 4G royalty, and the right side represents the 5G royalty. Therefore, if the 4G usage fee indicated on the left side is greater than or equal to the 5G usage fee indicated on the right side, the UE or the base station may determine to use 5G wireless communication as shown in equation 1.
In contrast, if the 4G usage fee indicated on the left side is smaller than the 5G usage fee indicated on the right side, the UE and the base station may determine to use 4G wireless communication.
Meanwhile, if the connection with the 5G base station is delayed, the service starts using the 4G communication system, and when the 5G communication system is available, the 4G communication system may be switched to the 5G communication system.
In particular, the application may be configured to run when a connection with the 5G base station is established by an initial configuration of the UE or user. However, if the connection with the 5G base station is not established within the threshold condition, the application may be configured to operate using the 4G communication system.
For example, if the UE is not connected to the 5G base station within 24 hours (configuration time), the UE may perform services such as system updates, cloud synchronization, online library services, internet television services, media storage downloads, and the like using the 4G communication system.
In other words, although services such as system update, cloud synchronization, online library service, internet television service, media storage download, etc. are configured to operate when the UE is connected to the 5G base station, if the UE is not connected to the 5G base station for a threshold time, the UE performs services such as system update, cloud synchronization, online library service, internet television service, media storage download, etc. using the 4G communication system.
Fig. 3 is a diagram illustrating a change in throughput over time when a UE connects to a 5G base station according to an embodiment of the present disclosure based on the above description.
In particular, as shown in fig. 3, until the 4G base station transmits information associated with the 5G base station to the UE, and until the UE attempts to connect to the 5G base station, the UE may use a wireless communication service using only 4G based on the information associated with the 5G base station.
If the UE uses a wireless communication system using only 4G, the UE may determine whether to perform a service using the 4G communication system or continue waiting for a connection with the 5G communication system using a cost function shown in equation 2 below.
[ 2]
In formula 2, T wait Representing 5G entry latency, C ux Representing user experience costs, C 4G Representing 4G royalties and T 4G_run Indicating 4G usage time. In addition, 1/C ux May be set as a machine learning value configured for each user according to the manner of use of the user. The left side of equation 2 represents the cost incurred when waiting for a connection with the 5G wireless communication system, and the right side represents the 4G wireless communication system waiting cost.
Accordingly, if the cost incurred when waiting for a connection with the 5G wireless communication system is greater than or equal to the 4G wireless communication system waiting cost, the ue may use the 4G communication system to perform a service configured to operate using the above-described 5G communication system according to equation 2.
If the cost incurred in waiting for a connection with the 5G wireless communication system is greater than the 4G wireless communication system waiting cost, the UE continues to wait for a connection with the 5G base station.
Fig. 4 is a block diagram of components of a base station according to an embodiment of the present disclosure. The base station may be a 4G base station or a 5G base station.
The base station 400 may include a transceiver 410 and a controller 420.
First, the transceiver 410 may transmit or receive signals. For example, the transceiver 410 may perform transmission or reception of signals with another base station or UE. If the base station 400 is a 4G base station, another base station may be a 5G base station.
Meanwhile, the controller 420 may be a component for performing overall control of the base station 400. First, the controller 420 may control the transceiver 410 to transmit information associated with another base station to the UE.
In this case, based on the information, the UE may transmit a signal for connection with the second base station to another base station. If the connection between the UE and another base station is successfully established, the UE may perform transmission or reception of signals using a communication system of the other base station.
The information associated with the other base station may be a Public Land Mobile Network (PLMN) identifier of the other base station.
Meanwhile, if information associated with another base station, such as a PLMN identifier, is received from the UE, the UE may turn on the 5G chip of the UE in a deactivated state based on the information. Using the turned-on 5G chip, the UE may transmit a signal to connect with another base station.
Further, fig. 5 is a block diagram of components of a base station according to an embodiment of the present disclosure.
As shown in fig. 5, the UE 500 may include a transceiver 510 and a controller 520.
First, the transceiver 510 may transmit or receive signals. For example, the transceiver 510 may perform transmission or reception of a signal with a base station or another UE. The UE 500 may perform transmission or reception of signals with the 5G base station and the 4G base station.
The controller 520 may be a component for performing overall control of the UE 500.
The controller 520 may receive information associated with the second base station from the first base station and transmit a signal for connection with the second base station based on the information. If the connection with the second base station is successfully established, the controller 520 may control the transceiver 510 to perform transmission or reception of signals using the communication system of the second base station.
In this case, the information associated with the second base station may be a Public Land Mobile Network (PLMN) identifier of the second base station.
Meanwhile, the UE 500 may further include a 5G chip. In this case, the controller 520 may perform control to turn on the 5G chip in the disabled state based on the received information. Using the turned-on 5G chip, the controller 520 may control the transceiver 510 to transmit a signal for connection with the second base station.
In addition, the controller 520 may perform control to run an application corresponding to a service corresponding to the communication system of the second base station or change an execution level of the application to a level corresponding to the communication system of the second base station.
The first base station may be an LTE base station and the second base station may be a 5G base station. In addition, if the connection with the second base station fails, the controller 520 may control the transceiver 510 to perform transmission or reception of a signal using the communication system of the first base station.
Fig. 6 is a diagram illustrating a 4G chip 600, a 5G chip 610, and an AP chip 620 of a UE. The UE may include both a 4G chip 600 and a 5G chip 610. The activation and deactivation of the 4G chip 600 and the 5G chip 610 may be controlled under the control of an Application Processor (AP) chip 620 of the UE.
For example, before the AP chip 620 of the UE receives information associated with the 5G base station from the 4G base station and attempts connection with the 5G base station, the AP chip 620 connects to the 4G chip 600 and receives a wireless communication service provided from the 4G base station.
If information associated with the 5G base station is received from the 4G base station and the 5G base station is identified as being within a threshold distance, the AP chip 620 of the UE may switch the connection with the 4G chip 600 to the connection with the 5G chip 610. The AP chip 620 of the UE may attempt to connect to a 5G base station using the 5G chip 610.
According to the above method, a UE connected to a normal 4G communication system can be easily connected to a 5G communication system, and a user can use a service suitable for the 5G communication system through the UE.
Although embodiments of the present disclosure have been shown and described, the present disclosure is not limited to the described embodiments. Rather, those skilled in the art will appreciate that changes can be made to these embodiments without departing from the subject matter of the present disclosure as defined in the appended claims, and that the modified embodiments should not be construed as being different from the technical ideas and ideas of the present disclosure.
Claims (14)
1. A method of controlling a user equipment in a wireless communication system, the method comprising:
receiving information about a second base station from a first base station while receiving data of a first quality based on a communication system in which the first base station is executed;
if the second base station is detected within a predetermined distance based on the received information about the second base station, turning on a fifth generation 5G chip in a deactivated state corresponding to a communication system of the second base station;
after the 5G chip is turned on, transmitting a signal for connection with a second base station based on the information about the second base station; and
if a connection with the second base station is successfully established, data of a second quality higher than the first quality is received based on a communication system in which the second base station is performed using the 5G chip.
2. The method of claim 1, wherein the receiving information about the second base station comprises:
and receiving a Public Land Mobile Network (PLMN) identifier of the second base station as the information about the second base station.
3. The method of claim 2, wherein the first quality of data and the second quality of data are received based on executing an image rendering application.
4. The method of claim 1, wherein the transmitting a signal for connection with the second base station comprises:
and transmitting a signal for connecting with the second base station by using the turned-on 5G chip.
5. The method of claim 1, wherein the first base station is a long term evolution, LTE, base station, the second base station is a 5G base station, and
wherein the transmitting or receiving signal includes: when the connection with the second base station fails, a signal is transmitted or received using the communication system of the first base station.
6. A method of controlling a first base station in a wireless communication system, the method comprising:
transmitting information about a second base station to a user equipment while the user equipment receives data of a first quality based on a communication system in which the first base station is executed,
wherein if the user equipment detects a second base station within a predetermined distance based on the information about the second base station, a fifth generation 5G chip of the user equipment corresponding to a communication system of the second base station in a deactivated state is turned on; after the 5G chip is turned on, the user equipment transmits a signal for connecting with a second base station to the second base station based on the information about the second base station; if the user equipment is successfully connected with the second base station, the user equipment receives data of a second quality higher than the first quality based on a communication system in which the second base station is performed using the 5G chip.
7. The method of claim 6, wherein the information about the second base station is a public land mobile network, PLMN, identifier of the second base station.
8. A user equipment in a wireless communication system, the user equipment comprising:
a transceiver configured to transmit or receive signals;
fifth generation 5G chips; and
a controller configured to:
controlling the transceiver to receive information about a second base station from a first base station while receiving data of a first quality based on a communication system in which the first base station is implemented,
control is performed to: if a second base station is detected within a predetermined distance based on the received information about the second base station, the 5G chip in a deactivated state corresponding to the communication system of the second base station is turned on,
after the 5G chip is turned on, transmitting a signal for connecting with the second base station based on the information about the second base station, and
when a connection with the second base station is successfully established, data of a second quality higher than the first quality is received based on a communication system in which the second base station is executed.
9. The user equipment of claim 8, wherein the controller is configured to control the transceiver to receive a public land mobile network, PLMN, identifier of the second base station as the information about the second base station.
10. The user device of claim 9, wherein the first quality of data and the second quality of data are received based on executing an image rendering application.
11. The user equipment of claim 10, wherein the controller is further configured to control the transceiver to transmit a signal for connection with the second base station using the 5G chip that is turned on.
12. The user equipment of claim 8, wherein when the connection with the second base station fails, the controller is further configured to control the transceiver to transmit or receive signals using the communication system of the first base station,
wherein the first base station is a long term evolution, LTE, base station and the second base station is a 5G base station.
13. A first base station in a wireless communication system, the first base station comprising:
a transceiver configured to transmit or receive signals; and
a controller configured to control the transceiver to transmit information about a second base station to a user equipment while the user equipment receives data of a first quality based on a communication system in which the first base station is executed, and
wherein if the user equipment detects a second base station within a predetermined distance based on the information about the second base station, a fifth generation 5G chip of the user equipment corresponding to a communication system of the second base station in a deactivated state is turned on; after the 5G chip is turned on, the user equipment transmits a signal for connecting with a second base station to the second base station based on the information about the second base station; and if the user equipment is successfully connected with the second base station, the user equipment receives data of a second quality higher than the first quality based on a communication system in which the second base station is performed using the 5G chip.
14. The first base station of claim 13, wherein the information about the second base station is a public land mobile network, PLMN, identifier of the second base station.
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| KR10-2017-0105927 | 2017-08-22 | ||
| PCT/KR2018/008536 WO2019039754A1 (en) | 2017-08-22 | 2018-07-27 | Terminal, base station, and control methods thereof in wireless communication system |
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| CN110999518A CN110999518A (en) | 2020-04-10 |
| CN110999518B true CN110999518B (en) | 2023-10-20 |
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| EP (1) | EP3651543A4 (en) |
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| WO (1) | WO2019039754A1 (en) |
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Also Published As
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| US20200178335A1 (en) | 2020-06-04 |
| CN110999518A (en) | 2020-04-10 |
| KR102381577B1 (en) | 2022-04-01 |
| WO2019039754A1 (en) | 2019-02-28 |
| KR20190020957A (en) | 2019-03-05 |
| EP3651543A1 (en) | 2020-05-13 |
| EP3651543A4 (en) | 2020-07-08 |
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